Request an on demand module with callbacks

RequestModuleWithCallback.java

int mySessionId = 0;
// Creates a listener for request status updates.
SplitInstallStateUpdatedListener listener = state -> {
    if (state.status() == SplitInstallSessionStatus.FAILED
       && state.errorCode() == SplitInstallErrorCode.SERVICE_DIES) {
       // Retry the request.
       return;
    }
    if (state.sessionId() == mySessionId) {
        switch (state.status()) {
            case SplitInstallSessionStatus.DOWNLOADING:
              int totalBytes = state.totalBytesToDownload();
              int progress = state.bytesDownloaded();
              // Update progress bar.
              break;

            case SplitInstallSessionStatus.INSTALLED:
              //Module is downloaded successfully
              break;
        }
    }
};
// Registers the listener.
splitInstallManager.registerListener(listener);

splitInstallManager.startInstall(request)
    .addOnSuccessListener(sessionId -> { mySessionId = sessionId; })
    .addOnFailureListener(exception -> {
        switch(((SplitInstallException) exception).getErrorCode()) {
            case SplitInstallErrorCode.NETWORK_ERROR:
                //Network Error
                break;
            case SplitInstallErrorCode.MODULE_UNAVAILABLE:
                //Module Not Available
                break;
            ...
     });

// When your app no longer requires further updates, unregister the listener.
splitInstallManager.unregisterListener(listener);